Acute pancreatitis occurs when symptoms appear suddenly. These may include pain in the upper left abdomen that spreads to the back, fever, nausea, vomiting, and a fast heart rate. Chronic ...

Other indications are loss of appetite, fever, blood in your stool, or vomiting longer than 24 hours. These symptoms can indicate serious conditions like cholecystitis, pancreatitis, and apendicitis.